Randall Cobb has revealed that he has been working to improve his strength during his off-season program with the Green Bay Packers.

The wide receiver has been taking part in daily workouts at the Packers' indoor training facility as he looks to increase his role in the team's offense.

The 22-year-old told the team's official website: "I just want to continue to improve, to get stronger, to get more powerful, to get more explosive and build myself up as a player, and build into a leadership role on this team.

"I want to do everything I can to put us in the best position for next season. It can get extensive at times. Earlier this week, we had some harder workouts."

Cobb had a break-out year with the Packers in 2012, scoring eight touchdowns for 954 receiving yards, while adding a further 964 yards with kick returns.